Rocket Mass Heaters are a really efficient way to heat a space, that you can build yourself for a relatively low cost. They are designed to burn at a high temperature, which results in less smoke and a more efficient fire. Ours is always a source of fascination, and when lit, the big room is warm in no time. Steve is off to Mayo in September to help run a course in building one, and in the meantime, here’s a reminder of how ours was put together.

I’m going on tour in September to teach a rocket mass heater workshop at our friend Claire Templar’s place Tir Na Nog in Mayo. Not many of these get built so its a rare opportunity to find out how and get hands on experience.

Something visitors always ask about here at Lackan Cottage Farm is our Rocket Mass Heater, and so we are honoured to be able to welcome Leslie Jackson, co-author of the definitive book ‘Rocket Mass Heaters’, to the farm on the evening of Saturday July 25th...

On a day like today when the wind is bitingly cold, but the skies are clear, and we enjoy some winter sunshine, it is great to be able to celebrate the fact that for once, everything is working, and we are able to take a moment to marvel at the fact that we have all...

Today we pushed on, built a brick support around the base of the firebrick burner, – above, and then backfilled all the gaps with perlite and a clay mix to thoroughly insulate the fire itself, which we want to burn as hot as possible. The clay mix...

Now that we’ve the outside of the build done, (regular readers will realise that there is something of a gap here, but don’t worry its coming soon), we are turning our attention to the rocket mass heater that is going to keep the space warm. For those who...